Surface acoustic wave transducer using a split-finger electrode on a multi-layered substrate
US4501987A · kind A · utility
10Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1981 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Dec 3, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02574
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave transducer has a multilayered substrate which is made of a nonpiezoelectric plate which has a surface which is coated with a piezoelectric film, and has an interdigital electrode which is disposed on or under the surface of the piezoelectric film. The interdigital electrode has a split structure and the phase velocity of the surface acoustic wave of the piezoelectric film is smaller than that of the nonpiezoelectric plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.